This chapter is applicable to waterproof structures such as coiled material waterproof roof, film coated waterproof roof, rigid waterproof roof, tile roof, and insulated roof gutter, eaves gutter, cornice, flashing, water outlet, lattice joint deformation joint, exhaust pipe, and pipe protruding from the roof. The waterproof node shall consider the changes of roof due to materials, structure, temperature difference, drying shrinkage, vibration and other factors according to the characteristics of building structure and environmental conditions